Re: Is there an upper limit on the size of an array if it is indexed?

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Is there an upper limit on the size of an array if it is indexed?
Date: 2014-02-24 20:35:08
Message-ID: 530BACFC.7080807@gmail.com
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On 02/24/2014 01:30 PM, AlexK wrote:
> I have created a unique index on an array of integers, and it works for a
> small test case:
>
> create table i(id int not null primary key,
> v int[] not null unique );
>
> insert into i(id, v) values(1, ARRAY[1,2]);
>
> -- fails
> insert into i(id, v) values(2, ARRAY[1,2]);
> -- succeeds
> insert into i(id, v) values(2, ARRAY[2,1]);
>
> Is there an upper limit on the size of an array being indexed? I am
> currently considering arrays of 2K-3K integers.
>
>
>
What are the odds? Might be worth the risk.

rjs

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